Hinge



(No Model.)

J, B. KNITTBL'.

HINGE.

' yPatented S apt. 11, `1894.-

nn: nouns und co. mouum. umm. n. c.

1710622157: Jahn/32ml.

/ ttorn egt. z' l UNITEDY STATES] PATENT i OFFICE' JOHN B. KNITTEL, OF ST. LOUIS, MISSOURT.

HINGE,

SPECIFICATION forming are of Leiters Patent No. 525,712, dated september 1 1, 1894.

l Application tiled January 15,1894. Serial No. 496,928. (No model.)

To all whom it may concern:

Beit known that I, JOHN B. KNITTEL, of the city of St. Louis, State of Missouri, have in vented certain new and usefullmprovements in Hinges, of which the following is'a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof. My invention has relation to improvements 1n hinges and consists in the novel arrangement and combination of parts more fully set forth 1n the specification and pointed out in the claims.

In the drawings, Figure 1 is a front view of that leaf of the hinge secured to the door jainb. Fig. 2 is an elevation of the adjusting bolt and nut. Fig. 3 is the front view of that leaf of the hinge secured to the door. Fig. 4 1 s a vertical section taken vthrough the hinge joint when the parts are brought together, the leaves in this view being shown broken. Fig. 5 is an elevation of a modified forin of hinge. Fig. 6 is a horizontal section taken through the door and jamb showing the hinge when closed; and Fig. 7 is a front view of the plate in the rear of the door hinge the purpose of which is to be subsequently described. f

The object of my present invention is to construct a hinge which will be simple and durable and at the same time he susceptible of such perfect and accurate adjustment that the door to which it is secured may open and close without jar or friction, and whereby the door can be carefully adjusted within the door-frame. The construction of the hinge too is such that in case any object should accidentally come between the leaves while the door is closing, the leaves will not snap 01T and break or be torn from the door or jamb to which they are respectively secured. In detail the hinge may be described as follows:

Referring to the drawings, 1 represents the leaf secured to the jamb by means of screws passed through screw-holes 2. The exposed edge of the leaf is provided with the ears 3 and 4, the upper ear 3 being provided with a suitable depression or socket 5 from which leads a cylindrical opening 6. The lower ear 4 is provided with a suitable depression orL socket 7. The leaf 8 which is secured to the door is provided with an ear 9 on the upper portion of which is formed an extension 10 which, when theleaves are placed in proper position, ilts in the socketV 5 of the leaf 1. When the leaves are placed together the screw-threaded bolt 1l is passed through the several ears; and before insertion of the bolt the adjusting nut 12 is placed in line with the `openings 6, 7, and 13 of the several ears, the said nut being adapted to support the ear 9 vbeing interposed between the latterand the ear 4. The n iit 12 is provided with a socket 14 which embraces the projection 15 of the lower ear 4, so that when the several parts are in their proper relative position'they will appear as seen in section in Fig. 4, or in elevation in Fig. 5, the screwthreaded bolt being always concealed from view. The nut l2 is provided with radial openings 16 and the head 17 of the bolt is provided with openings 18 for the insertion of a suitable lever or pin. If it be desired to slightly raise or lower the door on its hinge for purposes of accurate adjustment,

the operator .by inserting a pin or lever into one of the openings 18 can hold the bolt11 stationary, and can by inserting a second pin or lever into one of the openings 16 turn said nut 12 upon the screw-th readed portion of the" bolt 11 and in a proper direction for either raising or .lowering the door as necessity demands, the nut 12 of course raising or lowering the ear 9 whose extension 10 plays within the socket 5, and the extension 15 of the ear 4 playing within the socket 14 of the nut 12.

As seen from the drawings the hinge joint is thoroughly compact, only enough metal being removedfrom the several aligning ears as is, necessary to allow for the variable adjustments incident to the ordinary door. The nut 12 too from its relation to the remaining parts need 'not be of greater diameter than the general diameter of the hinge joint, so that the complete joint when the hinge is assembled will be a true cylinder.` The hinge is therefore compact, and possesses superior strength.

Within a suitable socket of the door frame and in the rear of the leaf 8 is secured a plate 19 having a screw-threaded stem 2O the said stem projecting through an opening in the leaf 8. The leaf 8 has a socket or depression 2l which receives a disk or plate 22 adapted to be screwed on the stem 20, and when screwed IOO fully into said depression the disk' will be flush with the outer surface of the leaf S.

When the door is closed the stem 2O passes into or is received within an elongatedV open- 5 ing 23 in the leaf l, the jar of the closing door being taken up by an elastic strip or plate 24 placed opposite said opening` 23 within a suitable depression 25 in the jamb. Of course the resilience of the spring 24 is made variable according to circumstances by varying the position of the plate 22 on the stern 20, the said plate 22 being the first to strike the surface of the leaf l, and thus limiting the extent or degree to which the plate 24 shall be depressed by the stern 2O in the act of closing the door. By the above arrange` ment the door closes with a certain amount of elasticity and without a jar.

To prevent the leaves from being snapped or torn 0E from the door or jamb in case an object accidentally comes between the leaves, I provide each leaf on either side of the main hinge joint with supplemental hinge joints 26 of ordinary construction, this form of hinge being best illustrated in the modification shown in Fig. 5. Of course it is essential that the leaves of the inner joint shall be comparatively narrower than the outer leaves, as fully shown in the drawings; otherwise this modification could not subserve any practical purpose, as the door would have a tendency to work olf its hinges.

The details of the hinge can be changed of course without departing from the spirit of my invention.

Having described my invention, what I claim is 1. A hinge comprising a leaf, upper and 'of the second leaf, a socket in the lower porlower'terminalv aligning ears for the same, a socket in the upper ear, an opening communi eating with said socket, a socket in the lower" ear, a second leaf,a central perforated ear the same, a projection on said ear adapted tu play within the socket of the upper terminal ear of the first leaf, a projection on thelower ear of the first leaf, a bolt having a smooth; and a screw-threaded portion, passed through` the several aligning ears, an adjusting nut passed over the screw-threaded portion of the bolt below the lower edge of the central earA tion of said nut, the latter being adapted to support the second leaf, and -itssocket'- to sk* multaneously embracel the projection of tlm lower ear of the first 1eaf,and means on said nut for turning the same, substantiallyas seh forth.

2. In a'hinge, a leaf adapted to be securef;l to the door, a plate in the rear of said leaf, a'. screw-threaded stemk on said plate passing.` through the leaf, a depression on said leaf, a t disk or plate adapted to be screwed on the, stem and pass into said cavity,a second leaiadapted to be secured to the jamb, an open ing in said leaf, a suitable spring or elastic plate in the rear of said opening, thezsaid stem adapted to come in contact with the elastic plate, and the said'disky adapted to limit the depth to which the stem will penetrate, substantially as set forth.

In testimony whereof I ax my signature in the presence of two witnesses.

JOHN B. KNITTEL.

Witnesses:

WALTER G. THIELECKE, EMIL STAREK. 

